Marina Singh is a pharmaceutical researcher sent deep into the Amazon jungle to inquire about the death of a colleague. It is there that the company is looking into a miracle drug based on a tree bark used by a native tribe. Upon her arrival Marina must find out the circumstances of her colleague's death, as well as find out why work has slowed to a crawl on the drug. That means dealing with Annick Swenson, a determined researcher who Marina has a complicated relationship with.